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绿美东莞|“探查林害”科普微课堂㉔:马缨丹

  • 2026-02-04 18:41:54
绿美东莞|“探查林害”科普微课堂㉔:马缨丹

生态安全是国家安全的自然基础,关乎人民福祉和国家可持续发展。在充满生机的绿水青山之间,隐藏着一些“森林破坏者”,它们正以我们难以察觉的速度侵蚀着树木,威胁着生态系统的平衡。从啃噬树叶的害虫,到破坏树木根基的病菌,从肆意蔓延的外来植物,到迅速繁殖的入侵动物,这些“不速之客”是如何暗度陈仓?它们对生态的危害究竟有多大?我们又该如何守护森林防线?  

“探查林害”科普微课堂带你直击林业有害生物及外来入侵生物的隐秘档案,揭秘它们的通关诡计,探寻守护森林的科学之法。

基本信息

学名:

Lantana camara

别名:五色梅、臭草

分类:马鞭草科马缨丹属

分布:原产于美洲热带地区,在我国主要分布于广东、广西、福建、云南、海南、台湾等地。

形态特征

株:常绿灌木,高1-2米,时为藤状。茎枝呈四方形,有短柔毛,通常有短而倒钩状刺。

马缨丹的枝

叶:叶对生,卵形至卵状长圆形,先端急尖或渐尖,基部心形或楔形,边缘有钝齿。叶面有粗糙的皱纹和短柔毛,背面有小刚毛;揉碎叶片有强烈气味,这是鉴别品种的重要特征。

马缨丹的叶

花:花序梗粗壮,长于叶柄;苞片披针形,花萼管状,顶端有极短的齿;花冠黄色或橙黄色,两面有细短毛。花期全年,在温暖地区可常年开花。马缨丹的花色多变,从初开的黄色渐变为红色,故又名“五色梅”。

马缨丹的花

果:果球形,径约4毫米,紫黑色。

马缨丹的果

生长习性

马缨丹喜高温高湿气候,不耐寒,适宜生长温度为20-32℃。喜阳光充足环境,耐旱耐瘠薄,对土壤要求不严,以排水良好的砂质壤土为佳。多生长于海岸地区、荒地、路旁,常栽培于公园、庭院中。

繁殖特性及危害

马缨丹的繁殖方式有两种,为有性繁殖和无性繁殖。

有性繁殖:通过种子进行有性繁殖,其种子轻而多,易于随风传播,也可通过鸟类、灵长类等动物摄食果实后,经粪便传播到其他地方。种子在适宜的条件下能够迅速萌发,长成新的植株;

无性繁殖:马缨丹可以通过蔓生枝着地生根进行无性繁殖,其枝条接触到地面后,容易生根发芽,形成新的植株。这种无性繁殖方式使得马缨丹能够快速扩展其分布范围,形成密集的植丛。

马缨丹具有很强的适应性和竞争力,能够迅速占据新的生境,形成密集的单优群落,排挤和绞杀其他物种,导致本地植物种群的衰退甚至消失。它还会释放化感物质,对周围其他植物的生长有明显抑制作用,会导致本土植物种子萌发率下降、幼苗死亡率上升。

马缨丹几乎全株有毒,人畜误食会导致肝肾损伤,引发梗阻性黄疸、光敏性皮炎等症状,毒性会累积造成慢性中毒,甚至导致死亡。已被列入《中国外来入侵物种名单》和《重点管理外来入侵物种名录》。

防治方法

1. 物理防治

在马缨丹零星分布区域,可在雨后土壤松软时,人工连根拔除植株,并彻底清理残枝、落果和根系,防止残留部分重新生长。拔除后的植株需集中销毁,避免种子或枝条扩散。对于大面积爆发的区域,可使用割草机、挖掘机等机械设备进行机械清除,但需注意清理残留根系,防止再生。

2. 化学防

对于大面积入侵的情况,根据马缨丹的生长阶段和环境条件,选择合适的除草剂进行喷施。但需注意,化学药剂可能对环境和非目标生物产生影响,使用时需严格遵守操作规范,避免药剂残留和污染。

3.生态管理

这是防止复发的根本措施。清除后立即在空地上种植乡土植物进行“复绿”,迅速占领生态位,有效抑制其种子萌发和再生。

本文章属公益科普性质,本文章的图片部分来自网络,如果涉及侵权,请及时与我们联系。

来源:东莞林业

绿美东莞科普微课堂

东莞市 林学会
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  1. CONNECT:[ UseTime:0.000472s ] mysql:host=127.0.0.1;port=3306;dbname=c460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000695s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000721s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004416s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000591s ]
  6. SELECT * FROM `set` [ RunTime:0.000211s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000563s ]
  8. SELECT * FROM `article` WHERE `id` = 483009 LIMIT 1 [ RunTime:0.005014s ]
  9. UPDATE `article` SET `lasttime` = 1770343506 WHERE `id` = 483009 [ RunTime:0.001737s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000280s ]
  11. SELECT * FROM `article` WHERE `id` < 483009 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000406s ]
  12. SELECT * FROM `article` WHERE `id` > 483009 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001995s ]
  13. SELECT * FROM `article` WHERE `id` < 483009 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.009156s ]
  14. SELECT * FROM `article` WHERE `id` < 483009 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.011852s ]
  15. SELECT * FROM `article` WHERE `id` < 483009 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.014213s ]
0.123940s